Study on Movement and Damage Law of Pit Slope under Condition of Combined Mining of an Open-pit Mine

Under the condition of combined mining of an open-pit mine, mining effect will be integrally superposed, mining slope will be subjected to the action of several induced stress fields, the sliding mechanism and deformation law of slope rock mass will become more and more complicated. In this paper, we aim at the east slope of Antaibao Open-pit Mine as the research object, which is extracted in combination with underground mining. This paper studied the moving law of the slope rock mass and the damage mechanism to the overburden of the goaf by numerical simulation. The study results are in favor of systematically summing up the model that maybe broken to slope and offering the scientific guidance to the safe production of the mine.